文档介绍：
A Template-Free Fabrication of g-C3N4 nanofibers and
their supercapacitor Properties#
Cao Chuanbao, M. Tahir*
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(School of Materials Science and Enigneering, Beijing Institute of Technology)
Abstract: In this paper, we have developed a facile, scale up and efficient method for the preparation
of graphitic-C3N4 nanofibers (GCNNF) as electrode for supercapacitors. The as-synthesized GCNNF
have 1D structure with higher concentration of nitrogen that is favorable for higher conductivity and
electrochemical performance. Secondly, high surface area of GCNNF provides large
electrode-electrolyte contact area, sufficient light-harvesting and mass-transfer as well as increased the
redox potential. Thus, GCNNF supercapacitors electrode shows high capacitance of F/g and
excellent cyclic durability in 2 M Na2SO4 aqueous electrolyte with the capacitance retention of %
after 2000 cycles at current density of 1 A/g. GCNNF exhibits high capacitance of 208 F/g even at
current density of 10 A/g with the good capacitance retention of %, which proves its good rate
capability. As, an economical precursor (melamine) and harmless, facile and template-free synthesis
method with excellent performance in supercapacitors make GCNNF a strong candidate for energy
storage and environment cleaning applications.
Key words: carbon nitride; supercap